Smoke rises from the Guana River Wildlife Management Area, as seen from the Guana Lake boat landing, while biologists with the Florida Fish and Wildlife Conservation Commission burn 159 acres of pine flatwoods on Tuesday afternoon, June 25, 2013. Prescribed burns are one method biologists use to manage healthy plant communities for wildlife, according to Joy Hill, public information coordinator at FWC. By burning off excessive vegetation (fuel) they are also an important used to reduce the risk of wild fires. By DARON DEAN, daron.dean@staugustine.com